OpenStack CentOS-6.5镜像创建

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before.安装软件

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yum install libvirt libguestfs-tools qemu-kvm qemu-img yum groupinstall Virtualization "Virtualization Client" -y yum -y install libvirt libguestfs-tools -y

1.下载一个最小的centos6.5的iso文件

1	wget http://mirrors.163.com/centos/6. ... -x86_64-minimal.iso

2.创建一个空的镜像文件

1	qemu-img create -f qcow2 /tmp/CentOS6.5-working.qcow2 10G

3.创建虚拟机

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qemu-img create -f qcow2 /tmp/CentOS6.5-working.qcow2 10G virt-install --virt-type=kvm --name=CentOS6.5 --ram=1024 \ --cdrom=/tmp/CentOS-6.5-x86_64-minimal.iso \ --disk=/tmp/CentOS6.5-working.qcow2,format=qcow2 \ --graphics=vnc,listen=0.0.0.0 --noautoconsole \ --os-type=linux --os-variant=rhel6

4.vnc远程安装，地址端口5900；分区只分一个,挂载到“/”，格式为ext4；

1 2	#重启后执行命令开启虚拟机 virsh start centos6.5

5.初始化

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#!/bin/bash # add the EPEL repo and update rpm -Uvh http://download.fedoraproject.or ... ease-6-8.noarch.rpm #yum -y update # install cloud-init yum -y install cloud-utils cloud-init parted git acpid chkconfig acpid on    # install linux rootfs resize cd /tmp git clone https://github.com/flegmatik/linux-rootfs-resize.git cd linux-rootfs-resize ./install if [[ $? -eq 0 ]];then   cd /tmp   rm -rf linux-rootfs-resize else   exit fi    #change sshd port sed -i 's/^#Port 22/Port 65530/g' /etc/ssh/sshd_config # clean up the network interface stuff rm /etc/udev/rules.d/70-persistent-net.rules sed -i '/HWADDR/d' /etc/sysconfig/network-scripts/ifcfg-eth0 sed -i '/UUID/d' /etc/sysconfig/network-scripts/ifcfg-eth0 sed -i '/^ONBOOT/ s/no/yes/g' /etc/sysconfig/network-scripts/ifcfg-eth0 sed -i '/^NM_CONTROLLED/ s/yes/no/g' /etc/sysconfig/network-scripts/ifcfg-eth0 echo "NOZEROCONF=yes" >> /etc/sysconfig/network # graft up grub sed -i 's/timeout=5/timeout=0/g' /boot/grub/menu.lst sed -i '/^\skernel/ s/$/ console=tty0 console=ttyS0,115200n8/' /boot/grub/menu.lst # say something cute in /etc/motd echo "This is Openstack-CentOS-6" >> /etc/motd # notify we're halting echo "Halting instance in 5 seconds!" sleep 5 # halt the instance halt

6.善后操作

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#清除网络相关硬件生成信息 virt-sysprep -d centos6.5 #压缩镜像 virt-sparsify --compress /tmp/CentOS6.5-working.qcow2 CentOS6.5-working_1.qcow2

7.完成